Lamp



FIG. 1 is a front and right side perspective view of a lamp embodying my new design, an exemplary base of the lamp being shown in broken lines for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof, the left side elevational view being a mirror image;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a lamp, as shown and described. 